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The element with the lowest average Atomic Mass is hydrogen (H) at 1.008 grams. The element with the highest is meitnerium (Mt) at 266 grams.

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Related Questions

Define periodic law?

Properties of elements are a periodic function of their atomic masses.


Is the mass and atomic mass the same?

No. The atomic weight is the number on the Periodic Table and is a weighted average of the atomic masses.


How were the atomic number and the atomic masses of the elements determined?

Atomic masses are determined by mass spectrometry. The atomic number is identic with the number of protons in the atom - depends on position in the periodic table.


State the periodic law on which Mendeleev's Periodic table was based and why and how this periodic law changed?

Mendeleev's Periodic Table was based on the periodic law which states that the properties of elements are a periodic function of their atomic masses. This law changed with the discovery of atomic number by Moseley which stated that the properties of elements are a periodic function of their atomic numbers, leading to a more accurate and modern periodic table based on atomic number.


How do you atomic masses vary throughout the periodic table of elements?

Each element has its own atomic mass.


How were the elements arranged in the spiral periodic table?

in order of their reletive atomic masses


Why the atomic mass numbers listed for elements on the Periodic Table are not whole numbers.?

Why are atomic masses of elements not generally whole numbers? The atomic masses listed on the periodic table are a weighted AVERAGE of an element'sisotopes. ... An element's atomic number is the number of protons in its nucleus. Number of protons specifies atom type.


Who discover the old Periodic Table?

Mendeleev discovered old periodic table. He arranged elements in order of atomic masses.


Why don27t elements in the periodic table have whole numbers for their atomic masses?

Because the masses of protons, neutrons and electrons are not whole numbers.


How did Mendeleev arrange the known element in his periodic table?

He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.


Who was or is Mendeleev in periodic tables?

He is the founder of the periodic table. He arranged the elements according to the atomic masses. Few changes are made in his periodic table to make the modern periodic table.


Main idea of mendeleevs first periodic table?

In Mendeleev's periodic table, the elements were arranged in the increasing order of their atomic masses and repeating periodic properties.